all Python 3systerm

sys

module

The interpreter's own state: command-line arguments, standard streams, import paths, version, exit.

Syntax

import sys

sys answers about the interpreter itself: sys.argv, sys.path, sys.modules, sys.version_info, the stdin/stdout/stderr streams and sys.exit. Questions about the operating system — environment variables, files, processes — belong to os, not sys. Common mistakes: comparing the sys.version string instead of the sys.version_info tuple, and expecting sys.exit to bypass finally — it only raises SystemExit.

Examples

import sys
print(sys.version_info >= (3, 0))  # → True
print(sys.platform)  # → ? linux, win32 или darwin
print(type(sys.argv).__name__)  # → list

See also

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